HR1806

HR1806 is a main-sequence star in the constellation of Orion.

HR1806 visual magnitude is 6.23. Because of its reltive faintness, HR1806 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR1806:

Color of HR1806 ⬤

Magnitude of HR1806 6.23

Class Main-sequence

VISIBILITY RIGHT NOW HR1806 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 15°.

Celestial coordinates and finder chart of HR1806

HR1806 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1806 are provided in the following table:

Right Ascension J2000 05h 26m 02s

Declination J2000 -05° 31’ 05”

Galactic Longitude 208.02°

Galactic Latitude -21.49°

Constellation Orion

The simplified sky map below shows the position of HR1806 in the sky:

Simplified finder chart for HR1806.

Visibility of HR1806 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR1806 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.5° RISE 8:24

Max altitude: 33.0° TRANSIT 13:54

Azimuth: 264.5° SET 19:25

RIGHT NOW HR1806 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1806

The image below is a photograph of HR1806 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR1806 is 0.013 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR1806. The red arrow shows the motion of HR1806 during the next 10000 years (2.17 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of HR1806 from the Sun and relative movement

HR1806 is distant 666.67 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 204.50 pc

Distance (light year) 666.67 ly

Heliocentric radial velocity 18 km/s

Proper Motion RA 0.013 arcsec/year

Proper Motion Dec 0.008 arcsec/year

Spectral properties of HR1806

HR1806 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.32

Spectral Type B9V

Color Index (B-V) -0.06

Temperature of HR1806 10941K

The red dot in the diagram below shows where HR1806 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1806. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1806

Henry Draper Catalogue HD35640

SAO Catalogue SAO132100

Hipparcos Catalogue HIP25401

Durchmusterung Catalogue BD-05 1247

In Evidence

Other stars in Orion